Display substrate and display device

ABSTRACT

The present disclosure provides a display substrate and a display device. A display substrate provided by an embodiment of the present disclosure includes: a display region and a peripheral region surrounding the display region; the display region includes: a plurality of gate lines, a plurality of data lines, and a plurality of pixel units, and each of the plurality of pixel units includes a driving transistor and a pixel electrode that are connected to each other; the peripheral region includes: signal lines and at least one electrostatic discharge structure for performing electrostatic discharge on the signal lines, and the electrostatic discharge structure includes a comb-shaped sixth electrostatic discharge pattern and a seventh electrostatic discharge pattern.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a divisional of U.S. Non-Provisional patentapplication Ser. No. 16/758,803, entitled “DISPLAY SUBSTRATE AND DISPLAYDEVICE”, and filed on Apr. 23, 2020. U.S. Non-Provisional patentapplication Ser. No. 16/758,803 is a U.S. national phase ofInternational Application No. PCT/CN2019/112770 filed on Oct. 23, 2019,which claims a priority to Chinese Patent Application No. 201920035765.7filed on Jan. 9, 2019. The entire contents of the above-referencedapplications are incorporated by reference for all purposes.

TECHNICAL FIELD

The present disclosure relates to the field of display technology, inparticular, to a display substrate and a display device.

BACKGROUND

With the continuous development of display technology, the applicationrange of display devices is becoming more and more extensive, andaccordingly the requirement on the working stability of display deviceis becoming higher and higher. Among them, the static electricitygenerated in a display device has attracted widespread attention due toan important factor affecting its working stability.

SUMMARY

An object of the present disclosure is to provide a display substrateand a display device.

In order to achieve the above object, the present disclosure providesthe following technical solutions.

A first aspect of the present disclosure provides a display substrateincludes: a display region and a peripheral region surrounding thedisplay region; the display region includes: a plurality of gate lines,a plurality of data lines, and a plurality of pixel units, and each ofthe plurality of pixel units includes a driving transistor and a pixelelectrode that are connected to each other; and the peripheral regionincludes: signal lines and at least one electrostatic dischargestructure for performing electrostatic discharge on the signal lines.

In one embodiment, the electrostatic discharge structure includes: afirst electrostatic discharge pattern connected to the signal lines; asecond electrostatic discharge pattern arranged in a different layerfrom the first electrostatic discharge pattern, in which a firstinsulating layer is arranged between the second electrostatic dischargepattern and the first electrostatic discharge pattern, so as to insulatethe first electrostatic discharge pattern from the second electrostaticdischarge pattern, and an orthogonal projection of the secondelectrostatic discharge pattern on a base substrate of the displaysubstrate at least partially overlaps an orthogonal projection of thefirst electrostatic discharge pattern on the base substrate.

In one embodiment, an orthogonal projection of the first electrostaticdischarge pattern on the base substrate is in a shape of broken line,and the first electrostatic discharge pattern is arranged in parallel toat least a part of the signal lines; an orthogonal projection of thesecond electrostatic discharge pattern on the base substrate is in ashape of broken line, and the second electrostatic discharge pattern isclosed end to end.

In one embodiment, the electrostatic discharge structure furtherincludes: a first electrode connected to the signal lines; and a secondelectrode connected to the second electrostatic discharge pattern, inwhich an orthogonal projection of the second electrode on the basesubstrate at least partially overlaps an orthogonal projection of thefirst electrode on the base substrate.

In one embodiment, one of the signal lines corresponds to a plurality ofthe electrostatic discharge structures, in at least two of the pluralityof the electrostatic discharge structures: a line width of the firstelectrostatic discharge pattern in one electrostatic discharge structurealong a direction perpendicular to its own extension direction is thesame as a line width of the second electrostatic discharge pattern inthe same electrostatic discharge structure along a directionperpendicular to its own extension direction; the first electrostaticdischarge patterns in different electrostatic discharge structures alonga direction perpendicular to their extension directions have differentline widths from each other, and/or the second electrostatic dischargepatterns in different electrostatic discharge structures along adirection perpendicular to their own extension directions have adifferent line widths from each other.

In one embodiment, the second electrostatic discharge pattern isconnected to a common electrode or a common electrode line of thedisplay substrate.

In one embodiment, the electrostatic discharge structure includes: athird electrostatic discharge pattern arranged in a different layer fromthe signal lines, in which a second insulation layer is arranged betweenthe third electrostatic discharge pattern and the signal lines; and aplurality of conductive patterns connected to the third electrostaticdischarge pattern, in which end portions of a part or all of theconductive patterns away from the third electrostatic discharge patternare configured as tip portions.

In one embodiment, the third electrostatic discharge pattern includes afirst end portion and a second end portion, in which an orthogonalprojection of the first end portion on the base substrate of the displaysubstrate and an orthogonal projection of the second end portion on thebase substrate at least partially overlap an orthogonal projection ofthe signal lines on the base substrate.

In one embodiment, the first end portion and/or the second end portionis configured as a tip portion.

In one embodiment, the electrostatic discharge structure furtherincludes: a fourth electrostatic discharge pattern arranged in parallelor not parallel to the signal lines; and/or a fifth electrostaticdischarge pattern arranged in parallel or not parallel to the signallines; an orthogonal projection of the fourth electrostatic dischargepattern on the base substrate and an orthogonal projection of the fifthelectrostatic discharge pattern on the base substrate are both locatedinside an orthogonal projection of the plurality of signal lines on thebase substrate; a first end portion of the third electrostatic dischargepattern is located between the signal lines and the fourth electrostaticdischarge pattern, and an orthogonal projection of the first end portionof the third electrostatic discharge pattern on the base substrate atleast partially overlaps an orthogonal projection of the fourthelectrostatic discharge pattern on the base substrate; and a second endportion of the third electrostatic discharge pattern is located betweenthe signal lines and the fifth electrostatic discharge pattern, and anorthogonal projection of the second end portion of the thirdelectrostatic discharge pattern on the base substrate at least partiallyoverlaps an orthogonal projection of the fifth electrostatic dischargepattern on the base substrate.

In one embodiment, the fourth electrostatic discharge pattern and/or thefifth electrostatic discharge pattern are arranged in a same layer andmade of a same material as the active layer in the display substrate.

In one embodiment, an overlapping portion between the orthogonalprojection of the fourth electrostatic discharge pattern on the basesubstrate and the orthogonal projection of the first end portion of thethird electrostatic discharge pattern on the base substrate is formed ofan intrinsic semiconductor material; and/or an overlapping portionbetween the orthogonal projection of the fifth electrostatic dischargepattern on the base substrate and the orthogonal projection of thesecond end portion of the third electrostatic discharge pattern on thebase substrate is formed of an intrinsic semiconductor material.

In one embodiment, the electrostatic discharge structure includes: acomb-shaped sixth electrostatic discharge pattern, including a pluralityof first comb teeth and a first connection portion for connecting oneend of the plurality of first comb teeth, in which the first connectionportion is connected to the signal lines, and end portions of a part orall of the plurality of first comb teeth away from the first connectionportion are configured as tip portions; and a seventh electrostaticdischarge pattern, located on a side of the plurality of first combteeth of the sixth electrostatic discharge pattern away from the firstconnection portion, in which a third insulation layer is arrangedbetween the seventh electrostatic discharge pattern and the sixthelectrostatic discharge pattern.

In one embodiment, the seventh electrostatic discharge pattern iscomb-shaped, and includes a plurality of second comb teeth and a secondconnection portion for connecting one end of the plurality of secondcomb teeth, and end portions of a part or all of the plurality of secondcomb teeth away from the second connection portion are configured as tipportions; an orthogonal projection of the tip portions of the pluralityof second comb teeth on the base substrate of the display substrate isopposite to an orthogonal projection of the tip portions of theplurality of first comb teeth on the base substrate.

In one embodiment, the sixth electrostatic discharge pattern and theseventh electrostatic discharge pattern are arranged in a same layer ora different layer.

Based on the technical solution of the above display substrate, a secondaspect of the present disclosure provides a display device including theabove display substrate.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described hereafter are intended to provide a furtherunderstanding of the present disclosure, and constitute a part of theembodiments of the present disclosure. The illustrative embodiments ofthe present disclosure and the description thereof are intended toillustrate the present disclosure, and do not constitute an improperlimitation of the present disclosure.

FIG. 1 is a first schematic view showing an electrostatic dischargestructure according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view taken along the directionA1-A2 in FIG. 1 ;

FIG. 3 is a second schematic view showing an electrostatic dischargestructure according to an embodiment of the present disclosure;

FIG. 4 is a third schematic view showing an electrostatic dischargestructure according to an embodiment of the present disclosure;

FIG. 5 is a fourth schematic view showing an electrostatic dischargestructure according to an embodiment of the present disclosure;

FIG. 6 is a fifth schematic view showing an electrostatic dischargestructure according to an embodiment of the present disclosure;

FIG. 7 is a sixth schematic view showing an electrostatic dischargestructure according to an embodiment of the present disclosure;

FIG. 8 is a schematic cross-sectional view taken along the directionB1-B2 in FIG. 7 ;

FIG. 9 is a seventh schematic view showing an electrostatic dischargestructure according to an embodiment of the present disclosure;

FIG. 10 is an eighth structure view showing an electrostatic dischargestructure according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

In order to further illustrate the display substrate and the displaydevice provided by the embodiments of the present disclosure, thepresent disclosure will be described in detail hereinafter inconjunction with the drawings.

In the related art, there are more and more types of display devices,and the application range is more and more extensive. Taking a liquidcrystal display (LCD) device as an example, an LCD display devicegenerally includes an array substrate and a color filter substrate thatarranged opposite to each other, and a liquid crystal material arrangedtherebetween. Among them, a gate driving circuit is generally arrangedon the array substrate. The entire gate driving circuit starts to workunder the control of the initial pulse signal line, and drive the entireLCD display device to achieve the display function under the coordinatedcontrol of the signal lines, such as the power signal line, the clocksignal line and the common electrode line. However, the LCD displaydevice is prone to generate static electricity during production andpractical application, and the static electricity is prone to affectvarious signal lines in the LCD display device. This leads to deviationsin its transmission signals, and even severe signal line breakage insevere cases, and thus the normal operation of the display device isaffected.

Based on the existence of the above problems, an embodiment of thepresent disclosure provides a display substrate, including a displayregion and a peripheral region surrounding the display region. Thedisplay region includes: a plurality of gate lines, a plurality of datalines, and a plurality of pixel units, and each of the plurality ofpixel units includes a driving transistor and a pixel electrode that areconnected to each other. As shown in FIG. 1 to FIG. 10 , the peripheralregion includes: signal lines 1 and at least one electrostatic dischargestructure 2 for performing electrostatic discharge on the signal lines1.

In the embodiment of the present disclosure, there are multipledistribution manners for a plurality of gate lines, a plurality of datalines, and a plurality of pixel units included in the display region.Exemplarily, a plurality of pixel regions distributed in an array in adisplay region is defined by a plurality of gate lines and a pluralityof data lines, each pixel region corresponds to one pixel unit, and eachpixel unit includes a driving transistor and a pixel electrode that areconnected to each other. The driving transistor is used to provide adriving signal to the pixel electrode, thereby driving the pixel unit toemit light.

In the embodiment of the present disclosure, the signal lines includedin the peripheral region may be various. Exemplarily, the signal linemay include a common electrode line, a gate line lead connected to thegate line, a data line lead connected to the data line, etc.

In this embodiment, the electrostatic discharge structure 2 may bearranged within a preset range around the signal lines 1 in the displaysubstrate. The electrostatic discharge structure 2 may be connected tothe signal lines 1 to be protected, or may be located around the signallines 1 to be protected but not connected to the signal lines 1 to beprotected. For example, the orthogonal projection of the electrostaticdischarge structure 2 on the base substrate of the display substrate mayat least partially overlap the orthogonal projection of the signal lines1 to be protected on the base substrate, thereby being capable ofdischarging the static electricity in the signal lines 1 by theelectrostatic discharge structure 2, and ensuring that the signal lines1 are capable of stably transmitting the corresponding signal.

As can be known from the specific structure of the display substrateprovided according to the embodiment of the present disclosure, in thedisplay substrate of the embodiment of the present disclosure, theperipheral region includes the signal lines 1 and the electrostaticdischarge structure 2 capable of performing electrostatic discharge onthe signal lines 1, so that the static electricity generated on thesignal lines 1 can be discharged through the electrostatic dischargestructure 2 during the preparing process or the working process of thedisplay substrate. Thus the signal lines 1 can stably and accuratelytransmit the corresponding signal, and thereby the work stability of thedisplay substrate is well ensured.

The specific structure of the electrostatic discharge structure in theembodiments of the present disclosure may be various. Hereinafter,several specific structures of the electrostatic discharge structure 2will be described with reference to FIGS. 1 to 10 , and the principle ofdischarging static electricity will be described in detail.

In one embodiment, as shown in FIGS. 1 to 4 , the electrostaticdischarge structure 2 may include: a first electrostatic dischargepattern 20 connected to the signal lines 1; and a second electrostaticdischarge pattern 21 arranged in a different layer from the firstelectrostatic discharge pattern 20, in which a first insulating layer 3is arranged between the second electrostatic discharge pattern 21 andthe first electrostatic discharge pattern 20, so as to insulate thefirst electrostatic discharge pattern 20 from the second electrostaticdischarge pattern 21, an orthogonal projection of the secondelectrostatic discharge pattern 21 on a base substrate 4 of the displaysubstrate at least partially overlaps an orthogonal projection of thefirst electrostatic discharge pattern 20 on the base substrate 4.

In this embodiment, the electrostatic discharge structure 2 includes: afirst electrostatic discharge pattern 20 connected to the signal lines1, a second electrostatic discharge pattern 21 capable of overlappingthe first electrostatic discharge pattern 20 in a directionperpendicular to the base substrate 4, and a first insulating layer 3arranged between the first electrostatic discharge pattern 20 and thesecond electrostatic discharge pattern 21, so that a capacitor structurecan be formed between the first electrostatic discharge pattern 20 andthe second electrostatic discharge pattern 21. In this way, when thestatic electricity is generated on the signal lines 1, the staticelectricity can be introduced into the capacitor structure via the firstelectrostatic discharge pattern 20 and stored in the capacitorstructure. When the static electricity stored in the capacitor structureexceeds a certain value, the static electricity will break down thecapacitor, thereby releasing the static electricity.

It should be understood that both the first electrostatic dischargepattern 20 and the second electrostatic discharge pattern 21 are made ofa conductive material. Exemplarily, the conductive material may be ametal material, e.g., Cu, Al, etc.; or a transparent conductivematerial, e.g., ITO (indium tin oxide), IZO (zinc tin oxide), etc.

In addition, in this embodiment, the above-mentioned first electrostaticdischarge pattern 20 and the second electrostatic discharge pattern 21may be arranged in the same layer and made of the same material as otherfilm layers having conductive properties in the display substrate. Inthis way, the first electrostatic discharge pattern 20, the secondelectrostatic discharge pattern 21, and other film layers having aconductive property in the display substrate can be simultaneouslymanufactured through a single patterning process. Thus, this avoids anadditional patterning process added due to the preparation of the firstelectrostatic discharge pattern 20 and the second electrostaticdischarge pattern 21, improves the production efficiency of the displaysubstrate, and reduces the production cost.

In this embodiment, setting the electrostatic discharge structure 2 tobe the above structure can export the static electricity generated onthe signal lines 1 to the capacitor structure in real time through thefirst electrostatic discharge pattern 20, thereby avoiding theaccumulation of static electricity on the signal lines 1, and betterensuring the working performance of the signal lines 1.

In this embodiment, as shown in FIG. 1 , the first electrostaticdischarge pattern 20 and the second electrostatic discharge pattern 21may be set as follows: the orthogonal projection of the firstelectrostatic discharge pattern 20 on the base substrate 4 is in a shapeof a broken line, and the first electrostatic discharge pattern 20 isarranged in parallel with at least a part of the signal lines 1; and theorthogonal projection of the second electrostatic discharge pattern 21on the base substrate 4 is in a shape of a broken line, and the secondelectrostatic discharge pattern 21 is closed end to end.

In this way, arranging the first electrostatic discharge pattern 20 inparallel with at least a part of the signal lines 1 can better transmitthe static electricity generated on the signal lines 1 to theelectrostatic discharge structure 2. In addition, making the orthogonalprojections of both the first electrostatic discharge pattern 20 and thesecond electrostatic discharge pattern 21 on the base substrate 4 into ashape of broken line is capable of preparing a plurality of overlappingregions between the first electrostatic discharge pattern 20 and thesecond electrostatic discharge pattern 21 in a direction perpendicularto the base substrate 4, that is, capable of forming a plurality ofcapacitor structures. In this way, the static electricity generated onthe signal lines 1 can be stored in a plurality of capacitor structuresthrough the first electrostatic discharge pattern 20. When each staticelectricity stored in the capacitor structure exceeds a certain value,the static electricity will break down the capacitor, thereby releasingthe static electricity. In addition, closing the second electrostaticdischarge pattern 21 end to end is capable of forming the secondelectrostatic discharge pattern 21 into a closed pattern, therebyachieving a better discharge of static electricity.

Further, as shown in FIG. 3 , the electrostatic discharge structure 2may further include: a first electrode 22 connected to the signal lines1; a second electrode 23 connected to the second electrostatic dischargepattern 21, in which an orthogonal projection of the second electrode 23on the base substrate 4 at least partially overlaps an orthogonalprojection of the first electrode 22 on the base substrate 4.

In this way, making the electrostatic discharge structure 2 to includethe first electrode 22 and the second electrode 23 described above, andat least partially overlapping the first electrode 22 and the secondelectrode 23 in a direction perpendicular to the base substrate 4 arecapable of forming a capacitor structure having a larger storagecapacity between the first electrode 22 and the second electrode 23. Inthis way, a large capacitance is formed between the first electrode 22and the second electrode 23, and static electricity can be accumulatedagain. When a large static electricity is generated on the signal lines1, the static electricity can be introduced through the first electrode22 into the capacitor structure formed of the first electrode 22 and thesecond electrode 23, thereby achieving a better discharge of staticelectricity and avoiding the influence of static electricity on thesignal lines 1.

Further, as shown in FIG. 4 , in the display substrate provided by theembodiment of the present disclosure, one of the signal lines 1 maycorrespond to a plurality of electrostatic discharge structures 2. Whenone of the signal lines corresponds to a plurality of the electrostaticdischarge structures, in at least two electrostatic discharge structures2, the line width of the first electrostatic discharge pattern 20 in thesame electrostatic discharge structure 2 along a direction perpendicularto its own extension is same as the line width of the secondelectrostatic discharge pattern 21 along a direction perpendicular toits own extension. In addition, in at least two electrostatic dischargestructures 2, the first electrostatic discharge patterns 20 in thedifferent electrostatic discharge structure 2 have different line widthsalong a direction perpendicular to their extension, and/or the secondelectrostatic discharge patterns 21 in the different electrostaticdischarge structures 2 have different line widths along a directionperpendicular to their extension.

In this way, making one of the signal lines 1 to correspond to aplurality of electrostatic discharge structures 2 is capable ofdischarging the static electricity generated on the signal lines 1through the plurality of electrostatic discharge structures 2, therebybetter improving the electrostatic discharge effect. Moreover, in thesame electrostatic discharge structure 2, the line width of the firstelectrostatic discharge pattern 20 in a direction perpendicular to itsown extension is same as the line width of the second electrostaticdischarge pattern 21 in a direction perpendicular to its own extension,and in at least two electrostatic discharge structures 2, the firstelectrostatic discharge patterns 20 and/or the second electrostaticdischarge patterns 21 in different electrostatic discharge structures 2have different line widths along a direction perpendicular to theirextension, so that the storage capacities of the capacitor structuresformed by different electrostatic discharge structures 2 are different,and thus one signal lines 1 can correspond to a capacitor structure withmulti-level storage capacity. In this way, when the static electricitygenerated on the signal lines 1 is relatively small, it can bedischarged through a capacitor structure with a relatively small storagecapacity; and when the static electricity generated on the signal lines1 is relatively large, it can be discharged through a capacitorstructure with a relatively large storage capacity. Therefore, makingone signal line 1 to correspond to a plurality of electrostaticdischarge structures 2 is capable of achieving a good discharge ofstatic electricity at all levels generated on the signal lines 1, andbetter ensuring the working performance of the signal line 1.

Further, in the embodiment of the present disclosure, the secondelectrostatic discharge pattern 21 may be suspended or may be connectedto a common electrode or a common electrode line of the displaysubstrate.

When the second electrostatic discharge pattern 21 is connected to acommon electrode or a common electrode line of the display substrate,the second electrostatic discharge pattern 21 can be connected to astable common electrode signal, thereby ensuring that the capacitorstructure formed between the first electrostatic discharge pattern 20and the second electrostatic discharge pattern 21 have stable storageperformance, and it is not easily affected by other interference signalsgenerated in the display substrate.

In another embodiment, as shown in FIG. 5 to FIG. 8 , the electrostaticdischarge structure 2 may include: a third electrostatic dischargepattern 24 arranged in a different layer from the signal lines 1, inwhich a second insulation layer (for example, the insulating film layer6) is arranged between the third electrostatic discharge pattern 24 andthe signal lines 1; and a plurality of conductive patterns 25 connectedto the third electrostatic discharge pattern 24, a part or all of endsof the conductive patterns 25 away from the third electrostaticdischarge pattern 24 are configured as tip portions.

Exemplarily, the third electrostatic discharge pattern 24 may bearranged around the signal lines 1 and arranged at a different layerfrom the signal lines 1. The third electrostatic discharge pattern 24 isprovided with a plurality of conductive patterns 25, the end portions ofthe plurality of conductive patterns 25 away from the thirdelectrostatic discharge pattern 24 are all tip portions, and both thethird electrostatic discharge pattern 24 and the plurality of conductivepattern 25 can be made of a conductive material. In this way, whenstatic electricity is generated on the signal lines 1, the electrostaticcharges can be transferred to the third electrostatic discharge pattern24, and discharged through the tip portions of the plurality ofconductive patterns 25 in the third electrostatic discharge pattern 24,thereby avoiding the influence of the static electricity on the signallines 1.

In addition to discharge the static electricity generated on the signallines 1, the above-mentioned third electrostatic discharge pattern 24can also discharge the static electricity located around the signallines 1 through the tip portions of the plurality of conductive patterns25, thereby avoiding the static electricity generated around the signalline 1 from affecting the signal lines 1.

It should be understood that the above-mentioned electrostatic dischargestructure 2 including the third electrostatic discharge pattern 24 andthe plurality of conductive patterns 25 can protect various signal lines1 in the display substrate. Exemplarily, the electrostatic dischargestructure 2 may be applied to the signal lines 1 located on the edge ofthe display substrate, thereby preventing the static electricitygenerated on the signal lines 1 and external static electricity fromaffecting the signal lines 1 located on the edge of the displaysubstrate.

In addition, the above-mentioned third electrostatic discharge pattern24 may be formed as an integrated structure with the plurality ofconductive patterns 25. In this way, the third electrostatic dischargepattern 24 and the plurality of conductive patterns 25 can be formedsimultaneously through a single patterning process, thereby bettersimplifying the process flow.

Further, as shown in FIG. 6 , in this embodiment, the thirdelectrostatic discharge pattern 24 may include a first end portion 241and a second end portion 242. The orthogonal projection of the first endportion 241 on the base substrate of the display substrate and theorthogonal projection of the second end portion 242 on the basesubstrate at least partially overlap the orthogonal projection of thesignal lines 1 on the base substrate.

In this way, the third electrostatic discharge pattern 24 includes thefirst end portion 241 and the second end portion 242, and the first endportion 241 and the second end portion 242 in a direction perpendicularto the base substrate at least partially overlap the signal lines 1, sothat a capacitor structure is formed between the first end portion 241of the third electrostatic discharge pattern 24 and the signal lines 1,and a capacitor structure is formed between the second end portion 242of the third electrostatic discharge pattern 24 and the signal line 1.In this way, when the static electricity is generated on the signallines 1, the static electricity can break through the two capacitorstructures, thereby realizing the discharge of the static electricitygenerated on the signal line 1.

Further, in this embodiment, the first end portion 241 and/or the secondend portion 242 of the third electrostatic discharge pattern 24 may beconfigured as tip portions.

In this way, the first end portion 241 and/or the second end portion 242of the third electrostatic discharge pattern 24 are set as tip portions,so that the static electricity received by the third electrostaticdischarge pattern 24 can not only be discharged through the plurality ofconductive patterns 25, but also be released through the first endportion 241 and/or the second end portion 242, so as to better preventthe static electricity from affecting the signal lines 1.

Further, as shown in FIG. 7 and FIG. 8 , the electrostatic dischargestructure 2 in this embodiment may further include a fourthelectrostatic discharge pattern 26, which may be arranged in parallel ornot parallel with the signal lines 1, and/or a fifth electrostaticdischarge pattern 27, which may be arranged in parallel or not parallelwith the signal lines 1, in which the orthogonal projections of thefourth electrostatic discharge pattern 26 and the fifth electrostaticdischarge pattern 27 on the substrate 4 are both located inside theorthogonal projection of the signal lines 1 on the base substrate 4.

A first end portion 241 of the third electrostatic discharge pattern 24is located between the plurality of signal lines 1 and the fourthelectrostatic discharge pattern 26, and an orthogonal projection of thefirst end portion 241 of the third electrostatic discharge pattern 24 onthe base substrate 4 at least partially overlaps an orthogonalprojection of the fourth electrostatic discharge pattern 26 on the basesubstrate 4.

A second end portion 242 of the third electrostatic discharge pattern 24is located between the plurality of signal lines 1 and the fifthelectrostatic discharge pattern 27, and an orthogonal projection of thesecond end portion 242 of the third electrostatic discharge pattern 27on the base substrate 4 at least partially overlaps an orthogonalprojection of the fifth electrostatic discharge pattern 27 on the basesubstrate 4.

In this way, the electrostatic discharge structure 2 is set as the abovestructure, so that a sandwich structure can be formed between the signallines 1, the first end portion 241 of the third electrostatic dischargepattern 24, and the fourth electrostatic discharge pattern 26, so thatthe first end portion 241 of the third electrostatic discharge pattern24 can form a capacitor structure with the signal lines 1 and the fourthelectrostatic discharge pattern 26, respectively. In this way, thestatic electricity generated on the signal line 1 can be discharged bybreaking through the capacitor structure.

Similarly, a sandwich structure may also be formed between the signallines 1, the second end portion 242 of the third electrostatic dischargepattern 24 and the fifth electrostatic discharge pattern 27, so that thesecond end portion 242 of the third electrostatic discharge pattern 24can form capacitive structures with the signal lines 1 and the fifthelectrostatic discharge pattern 27, respectively. In this way, thestatic electricity generated on the signal lines 1 can be discharged bybreaking through the capacitor structure.

It should be understood that, since the above-mentioned fourthelectrostatic discharge pattern 26 and the fifth electrostatic dischargepattern 27 are arranged in different layers from the signal lines 1,when the fourth electrostatic discharge pattern 26 and the fifthelectrostatic discharge pattern 27 are arranged in parallel with thesignal lines 1, via holes 5 may be arranged between the fourthelectrostatic discharge pattern 26 and the signal lines 1 and betweenthe fifth electrostatic discharge pattern 27 and the signal lines 1, andthe fourth electrostatic discharge pattern 26 is arranged in parallelwith the signal lines 1 and the fifth electrostatic discharge pattern 27is arranged in parallel with the signal lines 1 through the via holes 5.

It should also be noted that an insulating film layer 6 is formedbetween the fourth electrostatic discharge pattern 26 and the first endportion 241 of the third electrostatic discharge pattern 24 and betweenthe fifth electrostatic discharge pattern 27 and the second end portion242 of the third electrostatic discharge pattern 24. In addition, aninsulating film layer 6 is also formed between the first end portion 241of the third electrostatic discharge pattern 24 and the signal lines 1,and between the second end portion 242 of the third electrostaticdischarge pattern 24 and the signal lines 1.

Further, the fourth electrostatic discharge pattern 26 and/or the fifthelectrostatic discharge pattern 27 included in the above-mentionedelectrostatic discharge structure 2 may be arranged in the same layerand made of the same material as the active layer in the displaysubstrate.

In this way, by setting the fourth electrostatic discharge pattern 26and/or the fifth electrostatic discharge pattern 27 to be arranged inthe same layer and made of the same material as the active layer in thedisplay substrate, it is possible to simultaneously produce the fourthelectrostatic discharge pattern 26, the fifth electrostatic dischargepattern 27 and the active layer in the display substrate through asingle patterning process, thereby avoiding the addition of a patterningprocess specific for producing the fourth electrostatic dischargepattern 26 and the fifth electrostatic discharge pattern 27, and bettersimplifying the manufacturing process of the electrostatic dischargestructure 2 and production costs.

Further, an overlapping portion between the orthogonal projection of thefourth electrostatic discharge pattern 26 on the base substrate 4 andthe orthogonal projection of the first end portion 241 of the thirdelectrostatic discharge pattern 24 on the base substrate 4 is formed ofan intrinsic semiconductor material; and/or an overlapping portionbetween the orthogonal projection of the fifth electrostatic dischargepattern 27 on the base substrate 4 and the orthogonal projection of thesecond end portion 242 of the third electrostatic discharge pattern 24on the base substrate 4 may be formed of an intrinsic semiconductormaterial.

Since the intrinsic semiconductor material has better conductivity in ahigh-temperature environment, by allowing an overlapping portion betweenthe orthogonal projection of the fourth electrostatic discharge pattern26 on the base substrate 4 and the orthogonal projection of the firstend portion 241 of the third electrostatic discharge pattern 24 on thebase substrate 4 to be formed of an intrinsic semiconductor material,i.e., be formed into a first intrinsic semiconductor pattern; and/or byallowing an overlapping portion between the orthogonal projection of thefifth electrostatic discharge pattern 27 on the base substrate 4 and theorthogonal projection of the second end portion 242 of the thirdelectrostatic discharge pattern 24 on the base substrate 4 to be formedof an intrinsic semiconductor material, i.e., be formed into a secondintrinsic semiconductor pattern, when the display substrate is actuallyapplied, the fourth electrostatic discharge pattern 26 and the fifthelectrostatic discharge pattern 27 can better discharge the staticelectricity generated in the display substrate as the temperature of thedisplay rises.

In another embodiment, as shown in FIG. 9 , the electrostatic dischargestructure 2 may include:

a comb-shaped sixth electrostatic discharge pattern 28, including aplurality of first comb teeth 282 and a first connection portion 281 forconnecting one end of the plurality of first comb teeth 282, in whichthe first connection portion 281 is connected to the signal lines 1, andend portions of a part or all of the plurality of first comb teeth 282away from the first connection portion 281 are configured as tipportions; and

a seventh electrostatic discharge pattern 29, located on a side of theplurality of first comb teeth 282 of the sixth electrostatic dischargepattern 28 away from the first connection portion 281, in which a thirdinsulation layer is arranged between the seventh electrostatic dischargepattern 29 and the sixth electrostatic discharge pattern 28.

In this way, by setting the electrostatic discharge structure 2 to bethe above structure, the static electricity generated on the signallines 1 can be transmitted to the sixth electrostatic discharge pattern28 and discharged through the tip portion of the sixth electrostaticdischarge pattern 28. At the same time, since the seventh electrostaticdischarge pattern 29 is arranged on the side of the first comb tooth 282of the sixth electrostatic discharge pattern 28 away from the firstconnection portion 281, the electrostatic charge generated on the signallines 1 can also be transferred to the seventh electrostatic dischargepattern 29 by the sixth electrostatic discharge pattern 28, anddischarged through the seventh electrostatic discharge pattern 29. Ascan be seen, the electrostatic discharge structure 2 of the abovestructure can discharge through the sixth electrostatic dischargepattern 28 and the seventh electrostatic discharge pattern 29, therebyrealizing a faster and more efficient discharge of the staticelectricity generated on the signal lines 1.

Further, the seventh electrostatic discharge pattern 29 may be in a combshape, and include a plurality of second comb teeth 292 and a secondconnection portion 291 for connecting one end of the plurality of secondcomb teeth 292, and end portions of a part or all of the second combteeth 292 away from the second connection portion 291 are configured astip portions. Moreover, an orthogonal projection of the tip portions ofthe plurality of second comb teeth 292 on the base substrate of thedisplay substrate is opposite to an orthogonal projection of the tipportions of the plurality of first comb teeth 282 on the base substrate.

In this way, by setting the seventh electrostatic discharge pattern 29into a comb shape and setting the end portions of a part or all of thesecond comb teeth 292 into tip portions, it is possible to betterdischarge the static electricity transferred to the seventhelectrostatic discharge pattern 29 through the tip portions of thesecond comb teeth 292. Moreover, by setting the orthogonal projection ofthe tip portions of the second comb tooth 292 on the base substrate ofthe display substrate to be opposed to the orthogonal projection of thetip portions of the first comb tooth 282 on the base substrate, it ispossible to more easily transfer the charge of the static electricitygenerated on the signal lines 1 to the seventh electrostatic dischargepattern 29 through the sixth electrostatic discharge pattern 28, therebybetter discharging the static electricity generated on the signal line1.

Further, the plurality of first comb teeth 282 of the sixthelectrostatic discharge pattern 28 may correspond to the plurality ofsecond comb teeth 292 of the seventh electrostatic discharge pattern 29in a one-to-one manner. In this way, it is more conducive to transferthe charge of static electricity to the seventh electrostatic dischargepattern 29 through the sixth electrostatic discharge pattern 28, therebybetter realizing the electrostatic discharge on the signal line 1.

Further, the sixth electrostatic discharge pattern 28 and the seventhelectrostatic discharge pattern 29 may be arranged in a same layer or adifferent layer according to actual production requirements.

Exemplarily, the sixth electrostatic discharge pattern 28 and theseventh electrostatic discharge pattern 29 are arranged in a same layer.In this way, the sixth electrostatic discharge pattern 28 and theseventh electrostatic discharge pattern 29 can be producedsimultaneously by a single patterning process, thereby simplifying thepreparation process of the electrostatic discharge structure 2 and theproduction costs.

In addition, it should be noted that various specific structuresincluded in the electrostatic discharge structure 2 provided by theembodiment of the present disclosure may be used in combination witheach other. For example, as shown in FIG. 10 , the electrostaticdischarge structure included in the display substrate may include afirst electrostatic discharge pattern 20, a second electrostaticdischarge pattern 21, a third electrostatic discharge pattern 24, andthe conductive pattern 25 on the third electrostatic discharge pattern24.

It should be understood that the specific structures in the aboveseveral embodiments can be used in combination with each other, and anycombination of these embodiments should fall within the protection scopeof the present disclosure.

Another embodiment of the present disclosure further provides a displaydevice including the display substrate provided by the above embodimentsof the present disclosure.

Since the display substrate provided by the embodiment of the presentdisclosure is provided with an electrostatic discharge structure 2, andthe electrostatic discharge structure 2 capable of performingelectrostatic discharge on the signal lines 1, the static electricitygenerated on the signal lines 1 can be discharged through theelectrostatic discharge structure during the preparing process or theworking process of the display substrate, and thus the signal lines 1can stably and accurately transmit the corresponding signal, therebywell ensuring the work stability of the display substrate. Therefore,when the display device provided by the embodiment of the presentdisclosure includes the display substrate provided by the aboveembodiments of the present disclosure, it also has the effects such asstable and accurate signal transmission and stable operation performanceof the display device.

Unless otherwise defined, technical terms or scientific terms usedherein have the normal meaning commonly understood by one skilled in theart in the field of the present disclosure. The words “first”, “second”,and the like used herein does not denote any order, quantity, orimportance, but rather merely serves to distinguish differentcomponents. The “including” or “comprising” and the like used hereinmeans that the element or item appeared in front of the word encompassesthe element or item and their equivalents listed after the word, anddoes exclude other elements or items. The word “connected” or“connecting” and the like used herein are not limited to physical ormechanical connections, but may include electrical connections, whetherdirect or indirect.

“On”, “under”, “left”, “right” and the like used herein are only used torepresent relative positional relationships, and when the absoluteposition of the described object is changed, the relative positionalrelationship may also be changed, accordingly. It will be understoodthat when an element, such as a layer, film, region, or substrate, isreferred to as being “on” or “under” another element, the element may bedirectly “on” or “under” another element, or there may be anintermediate element.

In the description of the above embodiments, the specific features,structures, materials or features may be combined in any suitable mannerin any one or more embodiments or examples.

The above descriptions are optional embodiments of the presentdisclosure. It should be noted that one skilled in the art would makeseveral improvements and substitutions without departing from theprinciples of the present disclosure. These improvements andmodifications should also be regarded as the protection scope of thepresent disclosure.

What is claimed is:
 1. A display substrate, comprising a display regionand a peripheral region surrounding the display region; wherein thedisplay region comprises a plurality of gate lines, a plurality of datalines, and a plurality of pixel units, and each of the plurality ofpixel units comprises a driving transistor and a pixel electrode thatare connected to each other; wherein the peripheral region comprisessignal lines and at least one electrostatic discharge structure forperforming electrostatic discharge on the signal lines; wherein theelectrostatic discharge structure comprises a first electrostaticdischarge pattern connected to the signal lines; and a secondelectrostatic discharge pattern arranged in a different layer from thefirst electrostatic discharge pattern, wherein a first insulating layeris arranged between the second electrostatic discharge pattern and thefirst electrostatic discharge pattern, so as to insulate the firstelectrostatic discharge pattern from the second electrostatic dischargepattern, and an orthogonal projection of the second electrostaticdischarge pattern on a base substrate of the display substrate at leastpartially overlaps an orthogonal projection of the first electrostaticdischarge pattern on the base substrate; wherein the orthogonalprojection of the first electrostatic discharge pattern on the basesubstrate is in a shape of continuous line with gaps between linearportions, and the first electrostatic discharge pattern is arranged inparallel to at least a part of the signal lines; the orthogonalprojection of the second electrostatic discharge pattern on the basesubstrate is in a shape of continuous line with gaps between linearportions, and the second electrostatic discharge pattern is closed endto end; and wherein the electrostatic discharge structure furthercomprises a comb-shaped third electrostatic discharge pattern,comprising a plurality of first comb teeth and a first connectionportion for connecting one end of the plurality of first comb teeth,wherein the first connection portion is connected to the signal lines;and a fourth electrostatic discharge pattern, located on a side of theplurality of first comb teeth of the third electrostatic dischargepattern away from the first connection portion, wherein a thirdinsulation layer is arranged between the fourth electrostatic dischargepattern and the third electrostatic discharge pattern.
 2. The displaysubstrate of claim 1, wherein end portions of a part of the plurality offirst comb teeth away from the first connection portion are configuredas tip portions.
 3. The display substrate of claim 1, wherein endportions of all of the plurality of first comb teeth away from the firstconnection portion are configured as tip portions.
 4. The displaysubstrate of claim 1, wherein the fourth electrostatic discharge patternis comb-shaped, and comprises a plurality of second comb teeth and asecond connection portion for connecting one end of the plurality ofsecond comb teeth; and an orthogonal projection of the tip portions ofthe plurality of second comb teeth on the base substrate of the displaysubstrate is opposite to an orthogonal projection of the tip portions ofthe plurality of first comb teeth on the base substrate.
 5. The displaysubstrate of claim 4, wherein end portions of a part of the plurality ofsecond comb teeth away from the second connection portion are configuredas tip portions.
 6. The display substrate of claim 4, wherein endportions of all of the plurality of second comb teeth away from thesecond connection portion are configured as tip portions.
 7. The displaysubstrate of claim 1, wherein the third electrostatic discharge patternand the fourth electrostatic discharge pattern are arranged in a samelayer.
 8. The display substrate of claim 1, wherein the thirdelectrostatic discharge pattern and the fourth electrostatic dischargepattern are arranged in different layers.
 9. A display device,comprising the display substrate according to claim
 1. 10. The displaydevice of claim 9, wherein end portions of a part of the plurality offirst comb teeth away from the first connection portion are configuredas tip portions.
 11. The display device of claim 9, wherein end portionsof all of the plurality of first comb teeth away from the firstconnection portion are configured as tip portions.
 12. The displaydevice of claim 9, wherein the fourth electrostatic discharge pattern iscomb-shaped, and comprises a plurality of second comb teeth and a secondconnection portion for connecting one end of the plurality of secondcomb teeth; and an orthogonal projection of the tip portions of theplurality of second comb teeth on the base substrate of the displaysubstrate is opposite to an orthogonal projection of the tip portions ofthe plurality of first comb teeth on the base substrate.
 13. The displaydevice of claim 12, wherein end portions of a part of the plurality ofsecond comb teeth away from the second connection portion are configuredas tip portions.
 14. The display device of claim 12, wherein endportions of all of the plurality of second comb teeth away from thesecond connection portion are configured as tip portions.
 15. Thedisplay device of claim 9, wherein the third electrostatic dischargepattern and the fourth electrostatic discharge pattern are arranged in asame layer.
 16. The display substrate of claim 9, wherein the thirdelectrostatic discharge pattern and the fourth electrostatic dischargepattern are arranged in different layers.